二氧化碳物性快速计算关联式数据集

该数据集主要面向超临界CO2冷热利用相关领域研究，该领域面临二氧化碳焓值物性在超临界区及亚临界区非线性变化导致关联式复杂的特点，数据集在此背景下由数值计算产生，本数据集记录了针对二氧化碳焓值物性的可适用于大工况范围内的拟合关联式相关数据，包括原始焓值物性、对应温压数据、拟合关联式及其计算数据、计算偏差、计算时间等。另外，还包括基于上述数据发展的针对CO2焓值计算和压焓图显示的软件，可以方便地输入不同点位温度压力参数实时计算焓值，并在压焓图中累积显示。This dataset is primarily designed for research in the field of supercritical CO2 thermal and cold energy utilization. A key challenge in this field is that the nonlinear variation of enthalpy-related thermophysical properties of CO2 in both supercritical and subcritical regions results in highly complex correlation models. Against this backdrop, this dataset was generated through numerical calculations. It contains relevant data for fitting correlation models applicable to a wide range of operating conditions for CO2 enthalpy-related thermophysical properties, including original enthalpy thermophysical properties, corresponding temperature and pressure data, the fitting correlation models and their calculated results, calculation deviations, computation time, and more. Additionally, it includes software developed based on the aforementioned data for CO2 enthalpy calculation and pressure-enthalpy diagram display. This software enables users to conveniently input temperature and pressure parameters at different points to calculate enthalpy in real time, and cumulatively display the results on the pressure-enthalpy diagram.

搜集汇总

背景与挑战

背景概述

该数据集专注于超临界二氧化碳冷热利用领域，提供了针对二氧化碳焓值物性在大工况范围内的快速计算关联式，包括原始数据、拟合公式和计算偏差等，以解决物性非线性变化带来的计算复杂性。数据集还附带一个软件工具，支持实时输入温度压力参数计算焓值并可视化压焓图，适用于工程热物理和热力学研究，数据量较小（772.51KB），由北京大学发布，属于国家重点研发计划项目成果。